Hire the Best PROXY Networks Remote Support Software Specialists in Nairobi, KE

I conduct advanced cybersecurity operations across offensive security, offensive AI security, digital forensics, incident response, malware analysis, mobile forensics, network defense, and dark web intelligence, serving corporate, legal, and investigative sectors. 1. 🤖 AI Security I assess LLMs, RAG pipelines, AI agents, model integrations, and AI-enabled applications through authorized adversarial testing to uncover exploitable weaknesses before they are abused in production. Core Services: • AI reconnaissance and attack surface mapping • AI vulnerability scanning and fuzzing • Prompt injection, jailbreaking, prompt chaining, and guardrail bypass assessments • Agentic AI, model-to-model, and orchestration workflow attack simulations • AI infrastructure, plugin, API, and supply-chain security reviews • AI security testing, hardening validation, and AI incident response support Requirements: • Written authorization with defined AI testing scope • Approved access boundaries for prompts, APIs, models, agents, vector stores, and training/inference environments • Clear legal and operational approval for any adversarial AI assessment 2. 🧨 Red Teaming I simulate real-world adversary behaviour to identify critical weaknesses and strengthen security across corporate and private environments. Core Services: • Advanced phishing simulations and payload delivery • Internal and external network penetration testing • Wireless security testing (rogue APs, WPS, WPA/WPA2 weaknesses) Requirements: • Written authorization with clearly defined rules of engagement • Verified ownership or documented authorization over targeted assets 3. 🛡 DFIR – Digital Forensics & Incident Response I provide responses to cyber incidents, ensuring containment, investigation, and recovery across enterprise systems. Core Services: • Compromise assessment and root cause analysis • Timeline creation and attack vector tracing • Disk and memory acquisition (live and dead systems) • File integrity and log analysis • Lateral movement and persistence detection • Forensic reporting aligned with legal and evidentiary standards 4. 🐞 Malware Analysis & Threat Research I reverse engineer and dissect malware samples to uncover behaviour, persistence mechanisms, and threat actor infrastructure. Core Services: • Static and dynamic analysis of binaries and scripts • Payload unpacking, sandbox execution, and API behaviour monitoring • C2 tracking, backdoor analysis, and exploit identification • YARA rule creation and IOC development Tools: • FLARE VM, REMnux, Cuckoo Sandbox, IDA Pro, Ghidra, x64dbg, PEStudio 5. 📱 Data Recovery & Mobile Forensics I recover deleted, hidden, or encrypted data from mobile devices and digital storage media. Supported Sources: • Android and iOS devices • SD cards, USB drives, and hard drives • Messaging platforms such as WhatsApp, Telegram, Signal, and Messenger Core Services: • Deleted chat and message recovery • Recovery of photos, videos, and documents from local storage or cloud sync sources • Mobile backup decryption and analysis (iTunes, Google Drive, iCloud) • Forensic imaging and mobile analysis reporting Tools: • Cellebrite UFED, Magnet AXIOM Cyber, FTK 6. 🌐 Network Security I design, deploy, and monitor defensive infrastructure to strengthen visibility, segmentation, and response capability. Core Services: • pfSense firewall deployment and network segmentation • IDS/IPS implementation with Snort and Suricata • SIEM implementation with Wazuh and Splunk • VPN deployment and secure remote access • Proxy-based content filtering and monitoring 7. 🌑 Dark Web & OSINT Cyber Threat Intelligence I specialize in underground threat intelligence and OSINT-driven profiling to uncover fraud, leaks, and threat actor activity across the surface, deep, and dark web. Core Services: • Dark web marketplace and threat actor monitoring • Tracking aliases, infrastructure, and toolkit usage • Company OSINT investigations and employee attack surface mapping • Data breach hunting for leaked emails, credentials, and sensitive records • Fraud profiling involving impersonation, cybercrime campaigns, and financial scams Tools: • Recon-ng, SpiderFoot, Maltego, Shodan, Intelligence X, OnionScan, Ahmia, Tor2Web mirrors, Hunchly 8. ✍️ Cybersecurity Writing I provide fluent, technically accurate writing in both British and American English for security, forensic, and research audiences. Writing Areas: • Technical writing • eBooks and blog content • Articles

I am a Linux system administrator with 5+ years of experience specializing in captive portal systems (Coovachilli) on WiFi Guest Networks , particularly using FreeRADIUS for managing user access on wireless and wired networks for major Vendors such as TPLink, Unifi Ubiquity, and OpenWRT. I build robust, scalable solutions for bandwidth management, data caps, and session control. Am a certified FullStack Developer with Backend Specialization. My technical stack includes: 🔧 FreeRADIUS, CoovaChilli,OpenWisp, DD-WRT/OpenWRT/Omada Controller/ Unifi Cloud Controller Captive Portal Setup Specialist 📡 TPLink Omada Controller - Advanced Data Backup and Restoration 🐘 PHP — Backend APIs, portals, and admin dashboards 🐍 Python — Enterprise applications and automation scripts 💾 MySQL/MariaDB, PostgreSQL 🔐 Security hardening and performance optimization on Ubuntu/Debian servers I hold a Software Development Certification in Backend Full-Stack Development, and I deliver projects that are clean, documented, and production-ready. Why choose me? ✅ Top Rated – Top 10% on Upwork 📈 Proven results and client satisfaction 🤝 Professional, transparent communication 🔍 Deep understanding of backend systems and network access control Let’s collaborate and build something that works — securely and at scale.

I am a Senior Engineer with strong expertise in AWS, Google Cloud Platform, Linux systems, automation, and network/security engineering. I help businesses design, deploy, secure, and automate scalable infrastructure, on-prem, cloud, and hybrid environments. On the DevOps side, I specialize in: CI/CD pipelines using Jenkins, Git, and cloud-native CI/CD platforms Containerization & orchestration with Docker and Kubernetes Infrastructure as Code (IaC) using Terraform and Ansible Deployment automation for cloud and on-prem environments Linux system administration (Ubuntu & enterprise Linux) Scripting and automation using Python, Bash, and Git On the Cloud & Architecture side, I work extensively with: Amazon Web Services (AWS) – EC2, networking, security, and automation Google Cloud Platform (GCP) – Cloud Run and cloud-native services Cloud architecture design, optimization, and cost-efficient scaling Secure, highly available, and production-ready cloud environments I also bring deep expertise in Networking and Security, including: Firewall deployment & management (FortiGate, Fortinet, Palo Alto, Juniper, Cisco, UniFi) VPN technologies (IPsec, SSL VPN, FortiClient) Routing & switching – BGP, OSPF, ECMP, VRF, VXLAN ISP & enterprise networking – Peering, IP Transit, IXP sites Cisco & Juniper networking environments Network security, firewall policies, and security infrastructure hardening Additional strengths include: Windows Server & Active Directory administration IPv4/IPv6, VLANs, SSL, VoIP fundamentals Troubleshooting complex production issues Technical support and system configuration in enterprise environments I am detail-oriented, automation-driven, and security-focused, with real-world experience supporting mission-critical systems. Whether you need cloud migration, DevOps automation, CI/CD setup, Kubernetes deployments, firewall/VPN configuration, or network optimization, I deliver reliable, scalable, and well-documented solutions.

I will install, configure, tune and maintain your Linux servers. - CentOS, Debian, Ubuntu, CloudLinux, RHEL - Available to start IMMEDIATELY - Remotely - 17 years IT generalist (support, training, development, design) - 15 years Linux, UNIX, Systems Administration - 11 years Database administration: PostgreSQL, MySQL, MS-SQL - 11 years Network administration: TCP/IP, DNS, DHCP, SSH, VPN, VLAN, Routing, Firewalls - 6 years experience working with cloud providers: VPS/Dedicated servers, hosted/managed services - L1/L2/L3 tech support - Virtualization: Xen, OpenVZ, VMWare ESXI, KVM - Experience with AWS - EC2, RDS, S3, Cloudfront, ELB, ACM - Server provisioning, monitoring, performance testing and tuning - Datacenter and server installation, operations/administration - Linux: Debian, Ubuntu, CentOS, RHEL, Oracle Linux - DevOps: Ansible, Gitlab - High-availability systems (database replication, load-balancing) - Web-hosting management: WHMCS, cPanel, Plesk - Experience with networking - TCP/IP, DNS, SSH, Routing, VPN, routers, firewalls - Systems monitoring - Nagios, Zabbix, Monit - Apache, Nginx, Varnish, Squid, LetsEncrypt, SSL/TLS - HA, fail-over, backups and disaster-recovery - Understanding of GDPR, HIPAA - Experience deploying the following software on Linux: Nagios, Zabbix, Moodle, Apache, nGinx, MySQL, PHP, Python, PostgreSQL, ownCloud, Nextcloud, WordPress, Drupal, Mediawiki, WordPress

Every minute your systems are down costs you time, trust, momentum and money — I stop that clock. I'm Sean, a dedicated IT support specialist with 5+ years resolving critical infrastructure issues across international, governmental, and private sector environments. From first-call resolution to deep L3 troubleshooting, I bring calm, precise expertise across Windows and Linux Systems— turning chaos into operational reliability. What I handle: — Helpdesk & remote technical support (L1/L2/L3) — Windows & Linux system administration — Network troubleshooting & configuration — Virtualization & Docker environments — Server setup, maintenance & monitoring — Security hardening & access management What you can expect working with me: — Clear communication at every step — no jargon, no guesswork — Fast response times and reliable availability — Solutions that fix the problem, not just the symptom — A 5.0 rated track record on Upwork with clients who recommend me without hesitation. Whether you need immediate support or a long-term IT partner to keep your systems running clean — I show up prepared, stay until items are resolved, and leave your infrastructure better than I found it. Let's talk about what you need.

Cloud Computing and Linux Systems Engineer I have 5+ years experience deploying and managing mission-critical and complex Linux/Unix Infrastructures. This revolves around Cloud, Virtualization and Physical server Environments. I have done a good number of Projects on Linux, Cloud, Windows and Unix Systems Integration, Automation, Security, and Performance Tuning on Different platforms - Cloud, Containers and Bare Metal. My areas of expertise are: Web and Application Servers - Apache, Nginx, Plesk, LVS, HAProxy, Cpanel, WHM, Wordpress multi-site, ISPconfig Database systems - MariaDB, MySQL, PostgreSQL Cloud - OpenStack, Cloudstack, AWS, Google Cloud, Hetzner, Digitalocean, OVH Virtualization - KVM. oVirt. RHEV, VMWare, Proxmox, XEN OS - RHEL, SLES. Ubuntu, CentOS, Fedora, Debian, Microsoft Email - Postfix, Zimbra, Office 365 Storage - NAS, SAN, iSCSI, Samba, NFS, Ceph, GlusterFS, RAID, LVM, BtrFS Programming - Python, Perl, Bash VoIP - Asterisk, FreePBX, Kamailio, Elastix, 3CX, VoipSwitch Monitoring Tools - Cacti, Prometheus, Nagios, Zabbix, Grafana Server Hardening and Security - Firewalld, Iptables, SELinux, AppArmor, IDS, IPS, Ossec, Wazuh, Alienvault, Pfsense, Mikrotiks. Logs Management - Graylog, Elasticsearch, Kibana, Logstash User Management - LDAP, FreeIPA I like hacking Tech stuff and troubleshooting any kind of server problem with 100% efficiency and within the shortest time possible. I'm looking forward to working with you. Then let's read what my previous Upwork clients had said about me: "Kelvin was awesome. Extremely patient, great communication and really knows his stuff. Will be working together again for sure :)" "With Kelvin all work is done with no supervision !! Great professional !" "Best freelancer on Upwork, hands down. Very very skilled, always available, great at communicating and very friendly.